Amdam wrote extensively on contemporary art and theory and was an occasional collaborator with the artist Matias Faldbakken. He organized numerous shows, including “Refraction. The Image of Sense” (2014–15) and “Concatenation. Signature, Seriality, Painting” (2012), both at Blain|Southern in London; “Shattered Preface” (2014) at OSL Contemporary in Oslo; and “The Medium of Intensity” (2013) and “Awaiting Immanence” (2013), both at Carl Kostyál in Stockholm. Amdam had his first solo exhibition, “From the Depths of Separation,” in 2014 at Oslo’s Lynx, an artist-run project space.

Amdam was the frontman for the 1990s hardcore bands Onward, Sportswear, and For Pete’s Sake and served as editor of Fin Serck-Hanssen’s photographic history of punk and post-punk, In Between Pictures: Photographs 1979–1986 (2011).